Means for detecting metallic objects in hides and skins



Apri 8. 1933- A. P. GIULIANO 1,904,826

MEANS FOR DETECTING METALLIC OBJECTS IN HIDES AND S KINS I Filed May 22, 1930 xx j gmntoz flR iuZiaTlo' and other furs.

Patented Apr. 15,1933 2 i p f UNITED:STAT-Es PATENT ANTHONY IIBHILIP- GIULIANO, or NEWARK, NEW JERSEY. I MEANS ron DETECTING METALLIC OBJECTS IN HIDES AND sKIiNs 3 Application 1115a m 22 1930; Serial No. 454,758 7 This invention relates to means'for detectis mounted, this shaft carrying the fast and I V ingmetal such as nails, iron, copper, tacks, loose driving pulleys 14 and 15.. Anyyoth'er bullets screws eta, which are found in anisuitable means for driving the muses :mal' hides and particularly in rabbit skins be used, vhowever. Thelower roller-l2 is 7 provided with a shaftldf N a 1' The general object of my inventionisto The upper roller llis preferably longi zp rovide .a machine whichwill act-to detect tudinally fluted while the lower.- roller is' these metallic objects-inc the skins asthe formed with spirally orlhelically cut grooves a 7' skins or hides are passedthrough themand Orthreads 17 extending in,opposite direcilo which will energize a signal, enabling the tions from the middle of the roller..- Then- 2.

workman-ito"remove the metallic object. I shafts of the rollers aresupportedin'bea I Y A further object is toprovide a. construcings constructed as 1 follows. The upper 'tion'of'this character which-will ;mo ve out-,, shaft 13 is mounted Within the uppef'andward any metal objectwhich, if present at lower bushings l8 and 19 which may be all,- is usually present atsthe margin of the madeof Babbitt metal or any other suitable 7 hide or skin, but which will also act to move material; the lower bushing 19 resting upon 1 said metal objecteven if found in' the mid: and being supported by the vertically .eX-

-dle portion ofithe skin or hideyto a'position tending adjusting "screws 20 which -extend v where it will engage the upper and lower up throughthe hearing box 21. 'Abovethe 20 lmetallic rollers of the machine and cause upper bushin' 18, there is disposed a .ru ba circuit to :be'compjleted through signal. her or other e astic block 22 and resting ;u p-

A further object is to provide a construcon the top of this block is a metallic plate ztion of \this.character in which two opposed 23. Extending. 'dQ th oug $1 1 11121 Ye-metallic rollers are tusedythe bearings of plate 21a of the box21 is an adjustingscrew will the signal ibexenerg ized.

wPa-IIylIlg drawing, wherein:I

E 22 of Figure 1.

which are insulated from each other, the 24=having a lock nut 25. Thus any desiredi rollers being connected in circuit with ja sigpressure may behrought ,upon'the rubber nail-and spaced apart a distance suchithat cushion 22; This rubber cushion permits V only when .a' metallic object-is disposed bethe upper r ller 1.11130 raiseIslightly-incase I J f tween the. rollers and contacts therewith of necessity. :Oilfducts 26 are provided to p a v conduct oilito the bearings. l'lhee bearin'gfi A furtherob'ecuiis to provide improved b -21 i ext n downward at its middle hearings for rollers of this character which as at 27' to accommodate therein .theupper;

will permit the adjustment of the rollers and l0wer bearlng' bushings; 28 and29 re-i relatively toward or :from "each; other, but spectl'v ly whichgareiof insulating matelfiiil' S which will prevent the rollers from coming and which support theshaft '16. ,in electricallcontact 'witlreach other. BE W Il he upper earingrbushingafor' "Otherrobjects will-appear in the course of; heshaft 16 and the lowerr a i g b hing the following description. H 1 9 for theshaft :there is disposedametal-l My invention is illustrated ,in theaccom 1C {H 30 h ng ts m g di posedjinx Figure 1 s af-ront elevation ofa machine 1; An' adjustingscrQW' 321eXtendS llP'Wardi. of the character described -the bearings be; ithrough theboXingQZa-nd engages {the lower ing in. section 1, 1 bearing member 29 Sothat this bearingmem- Figure .2 is an enlargedsection, on the line 'ber may be adjusted upward or downward ,1 I and-this screwis held in. adjusted position a 'Beferring to dis drawing, 10 designates. Joy-means of thenut 33.

gro0'ves31 formed in thew-sides of the jboxuiz J I ametallicsupportinghframeofany suitable Preferably,non-conductlng character providing bearings for the-,me he dispo'sedaround the up e f d low e tallicirolllers 1.1 and12. The upper roller rollers at the ends thereot"which will always is shown as ,havingna shaft 13 ,IlpQIl,,Wl'1lCl1 it prevent the rollers from cominggin contacte these rollersbeing power driven rollers.

- whichisnon-yielding butthe hide will yield with each other, even if the bearings have become worn. V

Grounded to the frame 10 in any suitable manner is a wire or other conductor 35 which leads to a transformer T which in turn is connected in any suitable manner to a source roller. Inasmuch as the upper roller is not insulated from the frame .of themachine, it will be obvious that when a metallic object passes between these rollers and contacts with both of these rollers, a circuit will be completed to the signal and the signal will be energized. v

The reversely pitched spiral grooves or threads of the lower roller 12 are particularly important as these serve to pull out and detach either partially or wholly any metal object which may be in the hide or skin, thereby insuring contact of both rollers with the metal object. This roller, when revolving, works from the middle in opposite. directions so that it moves the metal which is usually found in the margin of the hide, but

- which may also be in the center of the hide outwardly, thereby causing it to contact with the upper and lower rollers and closing the circuit which operates the electrical signal.

It will be understood that the upper roller which is longitudinally fluted grips the hide and forces it through between the rollers,

While the hide is being forcedthrough the rollers, the spiral grooves of roller 12 move obliquely relatively to the hide over the surface thereof, drawing any foreign object thatmay cling to thehide laterally. If the bullet-be between the hide (that is, sandwiched in the hide), the spiral grooves passand over the bullet draw the hide from "around the bullet, causingthe hide to be punctured on opposite faces so that it may {well come'inmetallic contact with the rollers. It will be understood that Where-the bullet is disposed a high spot is created at this point and the lateral drawing action of the spiral roller, while not great enough 'to'actually 'stretchthe hide, tends to pull the Qally so that the upper and lower surfaces are pulled off-of the bullet, laying it bare.

If the bullet should become detached, it will be carried laterally by the spiral grooves and either form a contact between the two rollers or drop off upon the floor. The lateral movement whereby the bullet punctures the hide cannot be obtained with smooth rollers nor by pressure between the rollers, nor can this action be obtained by a smooth roller acting in conjunction with the reversely spiraled roller because the smooth roller will not grip the hide and hold it while the lateral pull takes place. If smooth rollers were used entirely, the hide would not go through the rollers without great difficulty as the rollers would slip and not grip the hide. If both rollers were merely longitudinally fluted, the hides would not be punctured as in this case there is only one directional force applied to the hide and that is inward, but by providing the combination of a longitudinally fluted roller with a spirally fluted or threaded roller, the hide is fed positively between the rollers while at the same time the upper and lower surfaces of the hide are stretched relative to eachother which causes either the disengagement of a foreign body or the puncturing of the hide. In either case a signal is sounded.

or the other and adjusting the screws 20, the rollers may be brought nearer to or further from each other, but the rollers can never r By turning the screw 24 in one direction roller and lift the parts 28 and 29 and the 7 shaft 16 upward toward or against the plate 31 and thus hold the lower roller in true position. i .7

The lowerroller tends to remove bullets and other foreign metallic objects from the hides. These are generally found in the center, but also may befound at the margins of the hide. Nails and other metallic objects are mostly found at the edges of the hide. These objects in some instances are completely removed from the hide for the 7' lower roller tends to pull them out and even if the metal is not completelydetached from the hide it hangs on to the edges and may be, easily detached with thefingers.

- While I have illustrated the upper roller as being fluted, I do not wishto be limited to this though this is preferable. This detector-may form part'of a. brushing machine whereby the skins are brushed and the. fur

cleaned and placed inproper condition.

Iclaim:- V 1. Means for detecting the presence of metallic objects in hides including twoparallel metallic rollers connected in anormally open signal circuit and spaced from each other to permitthe passageof the hide be tween them, one of said rollers being longitudinally fluted, the other roller having reversely pitched spiral threads extending in opposite directions from the middle of the roller whereby to cause the hide to be laterally Stretched as it passes between the rollers and cause theemergence of the object through the faces of the hide and permit the object to comein contact With the upper and lower rollers. V l

2. In a machine of the character described, a supporting frame having bearing boxes at opposite ends, a pair of lower bearing bushings of insulatingmaterial disposedin the lower end ofeach bearing box, meansfor limiting the upwardvmovement of said bearing bushings, a screw for raisingsaid bush ings, an upper pair'of'bearing bushings disposed in each box, s'crewsextending upward in each box and supporting said bushings, a resilient cushon disposed abovethe last named bushings, an adjusting screw extending through the top' of each box and operatively bearing againstsaid cushions, upper and lower metallic rollers connected in a normally open signalling circuit and having their shafts disposed through the respective bushings, and means preventing the rollers having metallic contact witheach other, one

of said rollers being longitudinally fluted,

the other of said rollers having reversely pitched spiral threads extending in opposite directions from the middle of the roller, thethreads on the last namedroller acting to stretch the hide laterally as it passes between the rollers and permit the object to puncture the hide and come in engagement with the upper andlower rollers.

In testimony whereof I aflixmy signature,"

ANTHONY P. GIULIANO- e 7 

